144 NEimOPTERA OF NORTH AMERICA. 



white ; twelve antecubitals ; seven postcubitals ; four discoidal 

 areolets. 



Length 52 millim. Alar expanse 90 millim. Pterostigraa 3 

 raillira. 



Hah. Carolina; New Jersey; Georgia; Florida; Cuba; Gua- 

 deloupe ; St. Thomas ; the specimens from the Antilles which I 

 saw were very much mutilated ; they may perhaps belong to T, 

 onusta. 



2. T. chinensis ! 



LibeUula chinensis Be Geer, Mem. Ill, 556 ; pi. XXVI, fig. 1. Burm. 

 Handb. II, 852, 27. LibeUula Virginia Ramb. ! Neuropt. 33, 2. 



Rufo-fuscous ; front above, and the apex of the vertex, brassy- 

 purple; feet black; abdomen having the three apical segments 

 with a dorsal, broad, black band ; superior appendages of the male 

 black, as long as the three apical segments ; inferior appendage short, 

 acute, reaching beyond the denticulated portion of the superiors ; 

 hamule longly exceeding the genital lobe ; vulvar lamina shorter 

 than the segment upon which it lies, excised within; wings hyaline, 

 the superior ones yellow at base; basal fourth of the posterior ones 

 fuscous, veined with yellow, not attaining the anterior margin, sur- 

 rounded with yellow; the anal margin with a large yellowish hyaline 

 spot upon the middle ; pterostigma small, fuscous ; membranule 

 white ; twelve antecubitalfe ; nine postcubitals ; four discoidal are- 

 olets. 



Length 53 mniim. Alar expanse 104 millim. Pterostigma 3 

 millim. 



Hah. China (De Geer); Madras (Burm.); Carolina (Vienna 

 Museum) ; Virginia (Eambur). 



3. T. onusta ! 



Tramea onusta Hagen. 



Very much like T. Carolina, but smaller ; differs, in having front 

 and vertex hardly obscurer; the superior appendages of the male 

 a little longer ; the inferior appendage just reaching to the denti- 

 culated portion of the superiors, the hamule long, exceeding the 

 genital lobe ; the vulvar lamina of the same length as the segment 

 upon which it lies ; base of the posterior wings less dilated, the 

 basal, fuscous spot smaller, not attaining to the anterior margin of 

 the wing, divided in front, and irregular exteriorly, the anal margin 



